Neutrino Cross Section Measurements for Long-Baseline Accelerator-based Neutrino Oscillation Experiments

Neutrino oscillations are clear evidence for physics beyond the standard model. The goal of next-generation neutrino oscillation experiments is to find a non-zero ${\theta }_{13}$, the last mixing matrix element for which we only know an upper limit. For this, next-generation long-baseline neutrino oscillation experiments require an order of magnitude better sensitivities. In particular, accelerator-based experiments such as T2K and NOvA experiments need (1) good neutrino energy reconstruction for the precise measurement of $\mathrm{\Delta }{m}_{32}^2$ and $si{n}^{2}2{\theta }_{23}$, and (2) good background prediction to measure ${\nu }_e$ appearance signals. Current and near future high statistics neutrino experiments, such as K2K, MiniBooNE, SciBooNE, MINOS, and MINERvA help both (1) and (2) by precise signal and background channel measurements.